This series of photographs documents the historic water overflow at Hoover Dam as seen from the Arizona side of the dam. Taken in August of 1983, this overflow marked the first time the spillways were used during a flood. After initially being filled, the spillways were tested once in August of 1941.

This series of photographs documents the historic water overflow at Hoover Dam as seen from the Arizona side of the dam. Taken in August of 1983, this overflow marked the first time the spillways were used during a flood. After initially being filled, the spillways were tested once in August of 1941.

First 40 foot slab of concrete poured in lining diversion tunnels for the construction of the Boulder Dam, now called Hoover Dam. Site Name: Hoover Dam (dam)

High scalers at Hoover Dam, with the Colorado River visible in the left side of the photo. Located on the back of the postcard is a handwritten description.

This is a photograph of Hoover Dam. Its crest and intake towers are visible in the photograph. Hoover Dam was named as such in 1947, but was previously named the Boulder Dam. "3." is written in the bottom left corner of the photo. Site Name: Hoover Dam (dam)

Construction site of the Boulder Dam, now known as Hoover Dam. Marion electric drag line with 5 cubic yard capacity bucket loading gravel. Site Name: Hoover Dam (dam)

An image of the upstream face of Hoover Dam. The name was officially changed from Boulder Dam to Hoover Dam in 1947.